> For the complete documentation index, see [llms.txt](https://software-help-docs.gitbook.io/knowledge-base/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://software-help-docs.gitbook.io/knowledge-base/software-guide/workflow-triggers/workflow-trigger-invoice.md).

# Workflow Trigger: Invoice

*In this article, we will explain how to set up a workflow trigger: Invoice, and how it can be used*

* Select the “**Add New Workflow Trigger**” button
* *This will pull up a list of selections of triggers on the right-hand side of the screen*

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* Scroll down until you see the “**Payments**” column
  * Select the “**Invoice**” button

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* Choose sent or paid as an invoice status

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* **Please note:** *The only filters are if the invoice has been **Sent** or **Paid***
* *You can trigger an automation based on if you sent an invoice to a particular contact, or if a contact has paid an invoice*
* **For Example**: *Send a notification email whenever you send an email. “Hey please make sure to check your email because we just sent you an invoice.” (see below)*

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* Once complete please make sure you select the green “**Save Action**” button on the bottom right before closing the trigger or moving on to another step

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